基本解釋[經(jīng)濟學]冷鑄鐵詞組短語短語cold -blast pig iron 冷鑄鐵;冷風生鐵white cold -blast pig iron 冷風白口鐵cold-blast pig更多詞組專業(yè)釋義經(jīng)濟學冷鑄鐵